摘要
为了探明保水剂(PAM)施用量对尿素氨挥发损失的影响,采用室内培养试验,保水剂设0%(P0)、0.08%(P1)、0.16%(P2)和0.24%(P3)4个处理,培养32 d,研究了在不同施用量保水剂对氨挥发的影响。研究结果表明:土壤中施入保水剂后,尿素氨挥发量降低,且随着培养时间的延长,各处理氨挥发量表现为先增加后减少,在培养的期内的第6、7、8、11 d的氨挥发量较大。P0、P1、P2和P3处理在培养32d后,各处理的氨累计挥发量为23.06 mg、19.69 mg、17.13 mg和14.56 mg,表现为P0>P1>P2>P3,且加P1、P2和P3处理比P0处理氨挥发总量分别减少14.61%、25.72%和36.86%,保水剂用量越大土壤氨挥发越少。
In order to investigate the influence of the application amount of water retaining agent(PAM)on the volatilization loss of ammonia in urea,this study adopted laboratory culture experiment.The water retaining agent was treated with 0%(P0),0.08%(P1),0.16%(P2)and 0.24%(P3)for 32d,and the influence of different application amount of water retaining agent on the volatilization of ammonia was studied.The results showed that the volatilization of urea ammonia decreased after the application of water retention agent in soil,and the volatilization of urea ammonia increased first and then decreased with the extension of culture time,and the volatilization of ammonia in the 6th,7th,8th and 11d of the culture period was larger.The cumulative ammonia volatilization of P0,P1,P2 and P3 treatments was 23.06mg,19.69mg,17.13mg and 14.56mg after 32d culture,showing P0>,P1>,P2>and P3.Compared with P0 treatment,the total amount of ammonia volatilization in P1,P2 and P3 treatment decreased by 14.61%,25.72%and 36.86%,respectively.The higher the amount of water-retaining agent,the less the ammonia volatilization in soil.
作者
孟婷婷
魏静
Meng Tingting;Wei Jing(Shaanxi Provincial Land Engineering Construction Group Co.,Ltd.,Xi’an,Shaanxi,710075,China;Institute of Shaanxi Land Engineering and Technology Co.,Ltd.,Xi’an,Shaanxi,710075,China;Key Laboratory of Degraded and Unused Land Consolidation Engineering,Ministry of Land and Resources,Xi’an,Shaanxi,710075,China;Shaanxi Provincial Land Consolidation Engineering Technology Research Center,Xi’an,Shaanxi,710075,China;Land Engineering Technology Innovation Center,Ministry of Natural Resources,Xi’an,Shaanxi,710075,China)
出处
《绿色科技》
2022年第2期123-125,共3页
Journal of Green Science and Technology
基金
陕西地建土地工程技术研究院预研项目(编号:2020-NBYY-04)
陕西省土地工程建设集团科研项目(编号:DJNY2021-15)。
关键词
保水剂
施用量
氨挥发
super absorbent polymers
seems
ammonia volatilization
